The division doesn't stop there: Galatians 2:7-9
Matthew 13:13 Context. 10 And the Disciples came, and said unto Him, Why speakest thou unto them in parables? 11 He answered and said unto them, "Because it is given unto you to know the mysteries of the kingdom of heaven, but to them it is not given."
In other words, the Disciples who follow the Kingdom Gospel preached by Jesus are given to know the mysteries of the Kingdom of Heaven.
Why don't you believe your own Apostle to the Gentiles, Sidon?
The Cross isn't divided.
There are not 2 Gospels, anymore then there are 2 Christ's on 2 Crosses.
So, when you read that Peter was dealing with Jews, this does not mean the message was not the same Gospel, as Paul's.
Also, you are not rightly dividing Matthew 13:13, that isn't written by Paul.
So, dont ask me why i dont "believe my own apostle", then quote another, as this makes you seem foolish.
Listen also, when Matthew 13:13 was written, Jesus has not DIED YET, Ligurian.
There was no NEW COVENANT yet....
So, you have Jesus, under the old covenant, dealing with the House of Israel .
This is not Paul's Gospel.
This is Jesus dealing with Jews, as under the law, before He was Crucified.
So, the Gospel of Grace, was not yet given as John 3:16, because Christ was not yet dead then resurrected.
This is why he could share foreknowledge about what was coming, with His 12, but not preach it as the Gospel of the Grace of God.
Try to SEE that Jesus can't preach the CROSS (Paul's Gospel)... to the JEW, when He's not been on it YET.